Your post said you were considering and wanted advise. The .357 with a heavy bullet will do the job, well most of the time. But; there are hogs and there are hogs. I have seen hogs that weighed 15 pounds and then I have seen some weighing 350+ pounds. For something like that I would much prefer more horsepower, minimum of .41 and peferably a .44 mag. I think just about everyone here would say the .357 is the minimum adequate handgun cartridge and if you get a big pig and less then perfect shot it may well fall short! If you are looking to purchase, and that is the what you indicated, then why not buy a handgun that will be adequate for all situations, a .41 or .44 mag? If recoil is your concern then you probably will not be able to handle a .357 either, atleast initially; also, you can shoot .44 special loads in the .44 mag and learn on those until you develop experience.
Just my thought. There is no such thing as overkill, there is definately underkill. In Africa to hunt the "Big Five" dangerous game a minimum of .375 caliber is required. Bell, the professional hunter, killed literally thousands of elephant with 7 X 57 and 6.5 X 55 mausers, both of which are considered very mild cartridges so it can be done. However, Bell knew the anatomony of an elephant and where to aim to place those small bullets in the brain and was skilled enough to do it. I am sure he would not have secleted either to use for a backup rifle in a very fast moving situation. The same applies to the
.357 mag. for hogs, in my opinion.